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Dual LSPR and CT synergy: 3D urchin-like Au@W18O49 enables highly sensitive in-situ SERS detection of dissolved furfural in insulating oils
Assessing the levels of furfural in insulating oils is a crucial technical method for evaluating the degree of aging and mechanical deterioration of oil-paper insulation. The surface-enhanced Raman spectroscopy (SERS) technique provides an effective method for enhancing the sensitivity of in-situ de...
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Published in: | Talanta (Oxford) 2025-01, Vol.281, p.126854, Article 126854 |
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description | Assessing the levels of furfural in insulating oils is a crucial technical method for evaluating the degree of aging and mechanical deterioration of oil-paper insulation. The surface-enhanced Raman spectroscopy (SERS) technique provides an effective method for enhancing the sensitivity of in-situ detection of furfural. In this study, a homogeneous three-dimensional (3D) urchin-like Au@W18O49 heterostructure was synthesized as a SERS substrate using a straightforward hydrothermal method. The origin of the superior Raman enhancement properties of the 3D urchin-like heterostructures formed by the noble metal Au and the plasmonic semiconductor W18O49, which is rich in oxygen vacancies, is analyzed experimentally in conjunction with density-functional theory (DFT) calculations. The Raman enhancement is further amplified by the remarkable dual localized surface plasmon resonance (LSPR) effect, which generates a strong local electric field and creates numerous "hot spots," in addition to the interfacial charge transport (CT). The synergistic effect of these factors results in the 3D urchin-like Au@W18O49 heterostructure exhibiting exceptionally high SERS activity. Testing the rhodamine 6G (R6G) probe resulted in a Raman enhancement factor of 3.41 × 10−8, and the substrate demonstrated excellent homogeneity and stability. Furthermore, the substrate was effectively utilized to achieve highly sensitive in-situ surface-enhanced Raman scattering (SERS) detection of dissolved furfural in complex plant insulating oils. The development of the 3D urchin-like Au@W18O49 heterostructure and the exploration of its enhancement mechanism provide theoretical insights for the advancement of high-performance SERS substrates.
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•3D urchin-like Au@W18O49 heterostructure as a high-performance SERS substrate.•The SERS substrate exhibits a high SERS enhancement factor, excellent homogeneity and long-term durability.•The substrate can be used for the in-situ detection of furfural in complex insulating oil environments.•Experiments combined with DFT calculations reveal the synergistic enhancement mechanism of dual LSPR and CT. |
doi_str_mv | 10.1016/j.talanta.2024.126854 |
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[Display omitted]
•3D urchin-like Au@W18O49 heterostructure as a high-performance SERS substrate.•The SERS substrate exhibits a high SERS enhancement factor, excellent homogeneity and long-term durability.•The substrate can be used for the in-situ detection of furfural in complex insulating oil environments.•Experiments combined with DFT calculations reveal the synergistic enhancement mechanism of dual LSPR and CT.</description><identifier>ISSN: 0039-9140</identifier><identifier>ISSN: 1873-3573</identifier><identifier>EISSN: 1873-3573</identifier><identifier>DOI: 10.1016/j.talanta.2024.126854</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Au@W18O49 ; Dual LSPR + CT ; Furfural ; In-situ detection ; Insulating oil ; SERS</subject><ispartof>Talanta (Oxford), 2025-01, Vol.281, p.126854, Article 126854</ispartof><rights>2024 Elsevier B.V.</rights><rights>Copyright © 2024 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c220t-c9b104219db852e1fb806d7b3101bbca5bff1431b02afdd7c12aa8686bb705803</cites><orcidid>0000-0001-9006-6852 ; 0000-0001-9150-6768</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Wang, Changding</creatorcontrib><creatorcontrib>Lei, Yu</creatorcontrib><creatorcontrib>Zhang, Sida</creatorcontrib><creatorcontrib>Wang, Ziyi</creatorcontrib><creatorcontrib>Wang, Miaolin</creatorcontrib><creatorcontrib>Ming, Zifeng</creatorcontrib><creatorcontrib>Liu, Ruiqi</creatorcontrib><creatorcontrib>Yang, Da</creatorcontrib><creatorcontrib>Zhang, Zhixian</creatorcontrib><creatorcontrib>Wang, Pinyi</creatorcontrib><creatorcontrib>Wan, Fu</creatorcontrib><creatorcontrib>Chen, Weigen</creatorcontrib><title>Dual LSPR and CT synergy: 3D urchin-like Au@W18O49 enables highly sensitive in-situ SERS detection of dissolved furfural in insulating oils</title><title>Talanta (Oxford)</title><description>Assessing the levels of furfural in insulating oils is a crucial technical method for evaluating the degree of aging and mechanical deterioration of oil-paper insulation. The surface-enhanced Raman spectroscopy (SERS) technique provides an effective method for enhancing the sensitivity of in-situ detection of furfural. In this study, a homogeneous three-dimensional (3D) urchin-like Au@W18O49 heterostructure was synthesized as a SERS substrate using a straightforward hydrothermal method. The origin of the superior Raman enhancement properties of the 3D urchin-like heterostructures formed by the noble metal Au and the plasmonic semiconductor W18O49, which is rich in oxygen vacancies, is analyzed experimentally in conjunction with density-functional theory (DFT) calculations. The Raman enhancement is further amplified by the remarkable dual localized surface plasmon resonance (LSPR) effect, which generates a strong local electric field and creates numerous "hot spots," in addition to the interfacial charge transport (CT). The synergistic effect of these factors results in the 3D urchin-like Au@W18O49 heterostructure exhibiting exceptionally high SERS activity. Testing the rhodamine 6G (R6G) probe resulted in a Raman enhancement factor of 3.41 × 10−8, and the substrate demonstrated excellent homogeneity and stability. Furthermore, the substrate was effectively utilized to achieve highly sensitive in-situ surface-enhanced Raman scattering (SERS) detection of dissolved furfural in complex plant insulating oils. The development of the 3D urchin-like Au@W18O49 heterostructure and the exploration of its enhancement mechanism provide theoretical insights for the advancement of high-performance SERS substrates.
[Display omitted]
•3D urchin-like Au@W18O49 heterostructure as a high-performance SERS substrate.•The SERS substrate exhibits a high SERS enhancement factor, excellent homogeneity and long-term durability.•The substrate can be used for the in-situ detection of furfural in complex insulating oil environments.•Experiments combined with DFT calculations reveal the synergistic enhancement mechanism of dual LSPR and CT.</description><subject>Au@W18O49</subject><subject>Dual LSPR + CT</subject><subject>Furfural</subject><subject>In-situ detection</subject><subject>Insulating oil</subject><subject>SERS</subject><issn>0039-9140</issn><issn>1873-3573</issn><issn>1873-3573</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2025</creationdate><recordtype>article</recordtype><recordid>eNqFkMtqG0EQRZuQQBTHnxCoZTYj92te2SRGtpOAwMGyybLpR43USrvH6Z4R6Bv802kj7wMXqhb33qIOIZ8YXTLKmov9ctJBx0kvOeVyyXjT1fINWbCuFZWoW_GWLCgVfdUzSd-TDznvKaVcULEgz1ezDrDe_LoDHR2s7iEfI6bt8QuIK5iT3flYBf8H4XL-9pt1t7IHjNoEzLDz2104QsaY_eQPCMVathk213cbcDihnfwYYRzA-ZzHcEAHw5yKyk0fi_Ic9OTjFkYf8kfybtAh4_nrPCMPN9f3qx_V-vb7z9XlurKc06myvWFUctY709Uc2WA62rjWiALDGKtrMwxMCmYo14NzrWVc667pGmNaWndUnJHPp96nNP6dMU_q0WeLoTDEcc6qFAkp61byYq1PVpvGnBMO6in5R52OilH1Al_t1St89QJfneCX3NdTDssfB49JZesxWnQ-FSrKjf4_Df8AvGGQYQ</recordid><startdate>20250101</startdate><enddate>20250101</enddate><creator>Wang, Changding</creator><creator>Lei, Yu</creator><creator>Zhang, Sida</creator><creator>Wang, Ziyi</creator><creator>Wang, Miaolin</creator><creator>Ming, Zifeng</creator><creator>Liu, Ruiqi</creator><creator>Yang, Da</creator><creator>Zhang, Zhixian</creator><creator>Wang, Pinyi</creator><creator>Wan, Fu</creator><creator>Chen, Weigen</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0001-9006-6852</orcidid><orcidid>https://orcid.org/0000-0001-9150-6768</orcidid></search><sort><creationdate>20250101</creationdate><title>Dual LSPR and CT synergy: 3D urchin-like Au@W18O49 enables highly sensitive in-situ SERS detection of dissolved furfural in insulating oils</title><author>Wang, Changding ; Lei, Yu ; Zhang, Sida ; Wang, Ziyi ; Wang, Miaolin ; Ming, Zifeng ; Liu, Ruiqi ; Yang, Da ; Zhang, Zhixian ; Wang, Pinyi ; Wan, Fu ; Chen, Weigen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c220t-c9b104219db852e1fb806d7b3101bbca5bff1431b02afdd7c12aa8686bb705803</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2025</creationdate><topic>Au@W18O49</topic><topic>Dual LSPR + CT</topic><topic>Furfural</topic><topic>In-situ detection</topic><topic>Insulating oil</topic><topic>SERS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Changding</creatorcontrib><creatorcontrib>Lei, Yu</creatorcontrib><creatorcontrib>Zhang, Sida</creatorcontrib><creatorcontrib>Wang, Ziyi</creatorcontrib><creatorcontrib>Wang, Miaolin</creatorcontrib><creatorcontrib>Ming, Zifeng</creatorcontrib><creatorcontrib>Liu, Ruiqi</creatorcontrib><creatorcontrib>Yang, Da</creatorcontrib><creatorcontrib>Zhang, Zhixian</creatorcontrib><creatorcontrib>Wang, Pinyi</creatorcontrib><creatorcontrib>Wan, Fu</creatorcontrib><creatorcontrib>Chen, Weigen</creatorcontrib><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Talanta (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Changding</au><au>Lei, Yu</au><au>Zhang, Sida</au><au>Wang, Ziyi</au><au>Wang, Miaolin</au><au>Ming, Zifeng</au><au>Liu, Ruiqi</au><au>Yang, Da</au><au>Zhang, Zhixian</au><au>Wang, Pinyi</au><au>Wan, Fu</au><au>Chen, Weigen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dual LSPR and CT synergy: 3D urchin-like Au@W18O49 enables highly sensitive in-situ SERS detection of dissolved furfural in insulating oils</atitle><jtitle>Talanta (Oxford)</jtitle><date>2025-01-01</date><risdate>2025</risdate><volume>281</volume><spage>126854</spage><pages>126854-</pages><artnum>126854</artnum><issn>0039-9140</issn><issn>1873-3573</issn><eissn>1873-3573</eissn><abstract>Assessing the levels of furfural in insulating oils is a crucial technical method for evaluating the degree of aging and mechanical deterioration of oil-paper insulation. The surface-enhanced Raman spectroscopy (SERS) technique provides an effective method for enhancing the sensitivity of in-situ detection of furfural. In this study, a homogeneous three-dimensional (3D) urchin-like Au@W18O49 heterostructure was synthesized as a SERS substrate using a straightforward hydrothermal method. The origin of the superior Raman enhancement properties of the 3D urchin-like heterostructures formed by the noble metal Au and the plasmonic semiconductor W18O49, which is rich in oxygen vacancies, is analyzed experimentally in conjunction with density-functional theory (DFT) calculations. The Raman enhancement is further amplified by the remarkable dual localized surface plasmon resonance (LSPR) effect, which generates a strong local electric field and creates numerous "hot spots," in addition to the interfacial charge transport (CT). The synergistic effect of these factors results in the 3D urchin-like Au@W18O49 heterostructure exhibiting exceptionally high SERS activity. Testing the rhodamine 6G (R6G) probe resulted in a Raman enhancement factor of 3.41 × 10−8, and the substrate demonstrated excellent homogeneity and stability. Furthermore, the substrate was effectively utilized to achieve highly sensitive in-situ surface-enhanced Raman scattering (SERS) detection of dissolved furfural in complex plant insulating oils. The development of the 3D urchin-like Au@W18O49 heterostructure and the exploration of its enhancement mechanism provide theoretical insights for the advancement of high-performance SERS substrates.
[Display omitted]
•3D urchin-like Au@W18O49 heterostructure as a high-performance SERS substrate.•The SERS substrate exhibits a high SERS enhancement factor, excellent homogeneity and long-term durability.•The substrate can be used for the in-situ detection of furfural in complex insulating oil environments.•Experiments combined with DFT calculations reveal the synergistic enhancement mechanism of dual LSPR and CT.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.talanta.2024.126854</doi><orcidid>https://orcid.org/0000-0001-9006-6852</orcidid><orcidid>https://orcid.org/0000-0001-9150-6768</orcidid></addata></record> |
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subjects | Au@W18O49 Dual LSPR + CT Furfural In-situ detection Insulating oil SERS |
title | Dual LSPR and CT synergy: 3D urchin-like Au@W18O49 enables highly sensitive in-situ SERS detection of dissolved furfural in insulating oils |
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